ARM: gpio: convert includes of mach/gpio.h and asm/gpio.h to linux/gpio.h

Convert arch/arm includes of mach/gpio.h and asm/gpio.h to linux/gpio.h
before we start consolidating the individual platform implementations
of the gpio header files.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-orion5x/mv2120-setup.c b/arch/arm/mach-orion5x/mv2120-setup.c
index 63ff10c..525eb12 100644
--- a/arch/arm/mach-orion5x/mv2120-setup.c
+++ b/arch/arm/mach-orion5x/mv2120-setup.c
@@ -7,7 +7,7 @@
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
  */
-
+#include <linux/gpio.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
@@ -20,7 +20,6 @@
 #include <linux/i2c.h>
 #include <linux/ata_platform.h>
 #include <asm/mach-types.h>
-#include <asm/gpio.h>
 #include <asm/mach/arch.h>
 #include <mach/orion5x.h>
 #include "common.h"